@book{13248,
	author = {Conference on "Operator Semigroups and Applications", Rotzhof(Styzia), Austria, June 5-11, 1983 and Kappel, F. ; ed.},
	title = {Infinite-dimensional systems; proceedings},
	publisher = {Springer-Verlag},
	year = {1984},
	address = {Berlin}
}